Reference Guide

Implementation Information
The implementation of route maps allows route maps with the no match or no set commands. When there is no match
command, all traffic matches the route map and the set command applies.
Important Points to Remember
● For route-maps with more than one match clause:
○ Two or more match clauses within the same route-map sequence have the same match commands (though the values
are different), matching a packet against these clauses is a logical OR operation.
○ Two or more match clauses within the same route-map sequence have different match commands, matching a packet
against these clauses is a logical AND operation.
● If no match is found in a route-map sequence, the process moves to the next route-map sequence until a match is found, or
there are no more sequences.
● When a match is found, the packet is forwarded and no more route-map sequences are processed.
○ If a continue clause is included in the route-map sequence, the next or a specified route-map sequence is processed after
a match is found.
Configuration Task List for Route Maps
Configure route maps in ROUTE-MAP mode and apply the maps in various commands in ROUTER RIP and ROUTER OSPF
modes.
The following list includes the configuration tasks for route maps, as described in the following sections.
● Create a route map (mandatory)
● Configure route map filters (optional)
● Configure a route map for route redistribution (optional)
● Configure a route map for route tagging (optional)
Creating a Route Map
Route maps, ACLs, and prefix lists are similar in composition because all three contain filters, but route map filters do not
contain the permit and deny actions found in ACLs and prefix lists.
Route map filters match certain routes and set or specify values.
To create a route map, use the following command.
● Create a route map and assign it a unique name. The optional permit and deny keywords are the action of the route map.
CONFIGURATION mode
route-map map-name [permit | deny] [sequence-number]
The default is permit.
The optional seq keyword allows you to assign a sequence number to the route map instance.
The default action is permit and the default sequence number starts at 10. When you use the keyword deny in configuring a
route map, routes that meet the match filters are not redistributed.
To view the configuration, use the show config command in ROUTE-MAP mode.
The following example shows viewing a configured route-map.
Dell(config-route-map)#show config
!
route-map dilling permit 10
Dell(config-route-map)#
You can create multiple instances of this route map by using the sequence number option to place the route maps in the
correct order. The system processes the route maps with the lowest sequence number first. When a configured route map is
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Access Control Lists (ACLs)